EP 1312702 A1 20030521 - Biodegradable fibers and fabrics, and method for controlling their biodegradability
Title (en)
Biodegradable fibers and fabrics, and method for controlling their biodegradability
Title (de)
Bioabbaubare Fasern und Flächengebilde und Verfahren zur Steuerung ihrer Bioabbaubarkeit
Title (fr)
Fibres et tissus biodégradables et procédé pour controler leur biodégradabilité
Publication
Application
Priority
JP 2001348141 A 20011114
Abstract (en)
Provided are biodegradable fibers of polylactic acid having a number-average molecular weight of from 50,000 to 150,000, which are so designed that the alkali solubility of the inside part of each fiber is larger than that of the outer peripheral part thereof and the surface of each fiber has from 5 to 50 cracks/10 cm. The physical properties of the fibers are good and enough for practical use, and the biodegradation thereof is well controllable in any desired manner.
IPC 1-7
IPC 8 full level
D01F 6/62 (2006.01); D04H 1/42 (2006.01); D06M 13/144 (2006.01); D06M 13/203 (2006.01); D06M 13/292 (2006.01); D06M 13/295 (2006.01); D06M 15/53 (2006.01)
CPC (source: EP KR US)
D01F 6/62 (2013.01 - KR); D01F 6/625 (2013.01 - EP US); D04H 1/435 (2013.01 - EP US); D04H 1/43916 (2020.05 - EP US); D04H 1/43918 (2020.05 - EP US); D06M 7/00 (2013.01 - EP US); D06M 13/144 (2013.01 - EP US); D06M 13/203 (2013.01 - EP US); D06M 13/292 (2013.01 - EP US); D06M 13/295 (2013.01 - EP US); D06M 2101/32 (2013.01 - EP US); D06M 2200/40 (2013.01 - EP US); Y10T 428/2913 (2015.01 - EP US); Y10T 428/2969 (2015.01 - EP US); Y10T 428/2975 (2015.01 - EP US); Y10T 428/2978 (2015.01 - EP US); Y10T 442/2861 (2015.04 - EP US); Y10T 442/30 (2015.04 - EP US)
Citation (search report)
- [DA] PATENT ABSTRACTS OF JAPAN vol. 2000, no. 01 31 January 2000 (2000-01-31)
- [A] PATENT ABSTRACTS OF JAPAN vol. 1997, no. 03 31 March 1997 (1997-03-31)
- [PA] YUAN X ET AL: "Comparative observation of accelerated degradation of poly(l-lactic acid) fibres in phosphate buffered saline and a dilute alkaline solution", POLYMER DEGRADATION AND STABILITY, BARKING, GB, vol. 75, no. 1, 2002, pages 45 - 53, XP004326574, ISSN: 0141-3910
Designated contracting state (EPC)
DE ES FR GB IT
DOCDB simple family (publication)
EP 1312702 A1 20030521; CA 2411004 A1 20030514; CN 1206394 C 20050615; CN 1421555 A 20030604; KR 100467115 B1 20050124; KR 20030040174 A 20030522; TW 200300467 A 20030601; TW 568964 B 20040101; US 2003092338 A1 20030515; US 6699581 B2 20040302
DOCDB simple family (application)
EP 02025520 A 20021113; CA 2411004 A 20021031; CN 02158435 A 20021114; KR 20020070796 A 20021114; TW 91133242 A 20021113; US 29330502 A 20021114